fuel lines

Hello ,
Beginning my fuel lines with 3/8 aluminium tube . I want to check that the flares are ok.
Could anyone tell me the correct outside diameter at the top of the flare ?
Thks. for reply.

Best rgds.
Jean

This might help

http://everyspec.com/MS-Specs/MS3/MS33000-MS33999/MS33584C_10953/

0.474 to 0.484 for a 3/8 tube

thks. for your reply
best rgds
Jean